discord.js await message
message.channel.awaitMessages(m => m.author.id == message.author.id,
{ max: 1, time: 30000 }).then(collected => {
if (collected.first().content.toLowerCase() == 'yes') {
message.reply('Shutting down...');
client.destroy();
}
else
message.reply('Operation canceled.');
}).catch(() => {
message.reply('No answer after 30 seconds, operation canceled.');
});